The elder sister of Oronto Douglas, a close aide to President Goodluck Jonathan, has been released by her abductors.
Augusta Douglas-Ayam was released by her kidnappers on Thursday morning, nine days after she was kidnapped in the Niger Delta area, the family said.
"After nine traumatic days in the hands of abductors, our beloved sister Augusta Douglas-Ayam was this morning unconditionally released to the family," Romeo Samuel Douglas, a spokesperson for the Douglas family said in a statement.
"We thank God for his protection and intervention. We also thank all Nigerians who through prayers and words of encouragement supported us throughout this ordeal."
"Our sister is currently in a hospital receiving treatment."
The family declined to comment on whether ransom was paid for the release or not.
"We will not be making any further statements on this issue and wish to put it behind us," they said.
Kidnapping has been on the rise in the Niger Delta and other states across Nigeria with many of the victims' families paying huge amounts as ransom before they are released.
Security agencies have also arrested many suspected kidnappers with some being prosecuted.